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Researchers at Columbia University developed a new optical microscopy platform called electronic pre-resonance stimulated Raman scattering (epr-SRS) microscopy that combines a high level of sensitivity and selectivity. The innovative technique allows for the imaging of up to 24 biomolecular structures at a time instead of being limited by only five fluorescent proteins. Credit: Nicoletta Barolini, Columbia University

A few realized waveguide mode converters. The devices consist of phased arrays of gold nano-antennas patterned on silicon waveguides. Incident and converted waveguide modes are shown to the left and right of the devices, respectively. Operating wavelength is ? = 4 ?m. Credit: Nanfang Yu/Columbia Engineering

A new approach to control forces and interactions between atoms and molecules, such as those employed by geckos to climb vertical surfaces, could bring advances in new materials for developing quantum light sources. This graphic depicts “quantum emitters,” in red. Credit: Purdue University image/Zubin Jacob